ALEXANDRIA, Va., April 21 -- United States Patent no. 12,606,444, issued on April 21, was assigned to FUJIMI Inc. (Kiyosu, Japan).
"Method for manufacturing silica sol" was invented by Masaaki Ito (Kiyosu, Japan), Jun Shinoda (Kiyosu, Japan) and Keiji Ashitaka (Kiyosu, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for manufacturing a silica sol according to an embodiment of the present invention includes: a step of preparing a silica sol reaction liquid by hydrolyzing and polycondensing an alkoxysilane or a condensate thereof using an alkali catalyst in a solvent; and at least one of a step of concentrating the silica sol reaction liquid by an ultrasonic atomization separation method and a st...